Dell Precision 420 - Manual (Page 127)

Primary EIDE hard-disk drive 40-pin connector
Secondary EIDE hard-disk drive 40-pin connector
Diskette drive 34-pin connector
Remote Wake Up 3-pin connector
Audio 4-pin CD-IN connector, 4-pin AUX pocket connector; and 4-pin TAPI pocket connector
Fans 3-pin connectors
Graphics and Video
Graphics architecture:
Desktop chassis
AGP Pro50 (4X) video card (see manufacturer's specifications)
Mini tower chassis
AGP Pro110 (4X) video card (see manufacturer's specifications)
Key Combinations
<Ctrl><Alt><Del> Operates differently depending on your operating system. See your operating system
documentation.
<F2> or <Ctrl><Alt><Enter> starts embedded System Setup program (during power-on self test [POST] only)
<F3> automatically starts (boots) the system from the network environment specified by the managed
boot agent (MBA) rather than from one of the devices in the System Setup Boot Sequence option
<F10> launches the utility partition (if installed) during system start-up
Controls and Indicators
Reset control push button
Power control push button
Power indicators green light-emitting diode (LED) on system board by control panel connector to indicate standby
power
green LED on system board by memory —steady when system is on; blinking in sleep state
dual-color LED on front panel —steady green when system is on; blinking green in sleep state;
yellow for diagnostics
Hard-disk drive access indicator green LED
Diagnostic LEDs four dual-color LEDs on back panel —green, yellow, or off to indicate diagnostic codes
Link integrity indicator green LED for 10-Mb operation; orange LED for 100-Mb operation
Activity indicator (on integrated NIC
connector) yellow LED
Power
DC power supply:
Wattage desktop chassis: 330 watts (W)
mini tower chassis: 410 W
Heat dissipation desktop chassis: 750 British thermal units (BTU)/hour (hr) (nominal)
mini tower chassis: 750 BTU/hr (nominal)
Voltage
90 to 135 volts (V) at 60 hertz (Hz); 180 to 265 V at 50 Hz
Backup battery 3-V CR2032 coin cell